Door-lock.



. K. N. CATHER.

DOOR LOOK.

APPLICATION FILED JUNE 7, 1913.

' 1,087,080. Patented Feb. 10, 1914.

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coLUMHlA PLAN C.

K. N. GATHER.

DOOR LOCK.

APPLIOATION FILED JUNE 7, 1913.

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DOOR LOOK.

APPLICATION FILED JUNE 7, 1913. I 1,087,080. Patented Feb. 10; 1914,

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' i zr zyman JVYZCaTher UT 1i KINGMAN NO'IT CATHER, or ooLonAno sranves, COLORADO.

DOOR-LOCK.'

Specification of Letters Patent.

Patented Feb. 10, 1914.

Application filed June 7, 1913. Serial No. 772,456.

To all whom it may concern: 7

Be it known that I, KINGMAN NoT'r CATHER, a citizen of the United States, residing at Colorado Springs, in the county of El Paso and State of Colorado, have invented certain new and useful Improvements in Door-Locks, of which the following is a specification. V

The present invention relates to a look more particularly designed and adapted for securing doors of freight cars and similar traveling conveyances, and is more particularly adapted to be used with a seal of fragile material which must be mutilated before the lock can be unfastened and access permitted to the conveyance.

The principal object of the present invention is to provide a lock in which the movements of the parts necessary to effect an unlocking operation will serve and act to mutilate and break the seal, whereby any tampering with the look by unauthorized parties is detected.

Another object of the present lnventlon is to utilize the locking member of the device as a pivot, about which certain portions of the mechanism move during the unlocking operation, whereby said portions act as a hammer or similar tool to break the seal at the commencement of the unlocking operation.

Another object of the invention is to have all portions of the locking mechamsms actuated by pressure and power, whereby the lock will work under any and all conditions and in any position which would not be the case where gravity is utilized in part or in whole for the purpose of effecting the on looking operation;

A further object of the invention is to dis pense entirely with the use of springs or analogous contrivances for eifecting the movement of any of the portions of the lock, thereby causing all portions to be moved entirely by pressure necessarlly exerted in carrying out the looking or unlockmg operation.

Further objects of the invention are to so arrange the holder for the seal as to insure the seal being correctly inserted each time; toutilize the movements of the operating parts of the locking device to effect the locking and unlocking operation, and dispense entirely with the use of any special or separate tools for performmg these operations; to utilize a locking member WlllCh will be so arranged as to have a certain portion ofplay or movementthat is, it will "not be positively joined to any other portion of the device, whereby a movement of certam of the working parts about said locking member as a'center is made possible; to so arrange the working parts as to eliminate any shattering or mutilation of the same, by reason of violent or unusual blows imparted to the bolt; to arrange a slot at one end of the bolt through which can be inserted a wire or other portion of a lead or wafer seal; and to so configure this slot with respect to the .eye through which the bolt passes as to cause said wire or other member to embrace or extend across said eye when the seal is put in place.

The invention further consists in the features of construction and combination of parts hereinafter described and claimed.

In the drawings: Figure 1 is a face view of the lock of the present invention, showing the casing partially cut away and the seal partially inserted in position; Fig. 2 a section on line 22 of Fig. 1, loo-king in the direction of the arrows, and showing the position assumed by the parts after the unlocking operation is completed; Fig. 3 a section on line 33 of Fig. 1, looking in the direction of the arrows; Fig. 4 a cross section showing the parts in locked position and the seal in place; Fig. 5 a view similar to Fig. 4, showing the parts in the position assumed during'the initial portion of the unlocking operation, and showing the key projected into position to fracture the seal; Fig. 6 a view similar to Fig. 4, showing the position assumed by the parts after being moved into position to unseat the locking member; Fig. 7 a detail showing the configuration of the opening in the casing which exposes the seal; Fig. 8 a face view of the base plate or member showing the key and the locking mechanism therefor in the position assumed after the unlocking operation has been completed; Fig. 9 a view similar to Fig. 8, showing the position assumed by the parts when they are returned to locked position; Fig. 10 a view similar to Fig. 8 and partially broken away, showing the position assumed by the parts during the initial portion of the unlocking operation; Fig. 11 a View similar to Fig. 10, showing the position assumed by the parts upon further movement tending to unlock the same;

Fig; 12 a view similar to Fig. 10, showing the position assumed by the parts after the locking member has been unseated and the key in position to be driven to the unlocking position shown in Fig. 8; Fig. 13 a section on line 1313 of Fig. 8, looking in the direction of the arrows; Fig. 14 a section on line 1 %11s of Fig. 9, looking in the direction of the arrows; Fig. 15 a section on line 15-15 of Fig. 10, looking in the direction of the arrows; Fig. 16 a side view of the key member; Fig. 17 a section on line 1717 of Fig. 12, loo-king in the direction of the arrows; and Fig. 18 a detail showing a portion of the under face of the'bolt.

Referring now to the drawings, the form of device which I have illustrated as showing one manner of carrying out the present invention and one embodiment thereof consists of a casing 19 adapted to be secured to a suitable portion of the car or other structure by means of fastening members 20, one of said members, as shown, terminating in an eye 21, which a hasp, not shown, embraces as usual. Through the opening in said eye one end of the bolt of the lock is projected, lying when projected above the hasp and preventing the removal of the hasp in the usual manner.

The casing is provided upon its upper face with an aperture or opening 22, be neath which lies, when the device is in locked position, the seal of the lock. The walls about said opening may be provided with a series of lugs or inwardly extending points or projections, best shown in Fig. 7, which would prevent the cutting of the seal for the purpose of removing the same. By providing these lugs, it would be impossible to cut the seal close to its edges and remove the same, and the out, if made, would have to be beyond the ends of the points or projections 23, and in such case the seal should not be replaced within the holder, owing to the fact that it will be so small as to either tumble out or be immediately noticeable, in either of which cases an illdication would be given that the lock had been tampered with and an investigation could be started. The casing is provided with suitable openings 19, through which the bolt slides, and the casing surrounds a plate 24 which, for the purpose of description, may be termed a base plate or member, and this plate, as shown, is provided with a straight longitudinal groove 25 and an arcuate groove or channel 26, the ends of the arcuate-shaped groove communicating with the groove 25, as will be clearly understood by referring to Figs. 8 to 12 inclusive.

Mounted to slide within the groove 25 is a member 27, which may be termed a key member, since it is by the movement of this member that the bolt is permitted to move to locked and unlocked positions; said member 27 is best illustrated perhaps in Fig. 16, and consists of a finger-like portion 28 which is provided with a cam surface 29 and a cam surface 30, the functions of which will more clearly appear hereinafter. The remaining or enlarged portion of the member 27 is adapted to extend into a slot or opening 30 formed in a bolt 31. The key member 27 has, as shown, one corner cut out, as at 32, to provide a rightangled surface which rests against certain of the walls about the slot 30, as will be clearly seen from a study of Fig. 4. This shoulder, therefore, prevents any upward or forward movement of this end of the key member 27. The end 33 of the enlarged portion of the key member is of a nature to freely move within and be projected beyond the slot 30, and it is this end which acts as a hammer and performs the operation of breaking the seal when the bolt is initially moved toward unlocked position.

One side of the key member 27 is grooved, as at 34 in Fig. 16, and said groove (er-- minates in a semi-cylindrical-shaped pocket 35 which is adapted to receive a locking member which, in the form illustrated, consists of a ball 36, and said ball, when insert ed within said pocket, prevents any movement of the key tending to permit the unlocking of the bolt; said ball assumes, when in looking position, the position shown more clearly in Fig. 14, in which figure, as will be seen, it lies partially within the pocket 35 and partially within a pocket 37 formed at the end of the arcuate-shaped slot 26. In order to move the key member to a posi tion to permit an unlocking of the bolt, it will be necessary to slide the same in the slot 25 in the direction indicated by the ar row in Fig. 4. By referring to this figure and Fig. 16, it will be seen that the walls of the pocket 35 consists of one designated by the numeral 38 which is substantially straight, and another designated by the numeral 39 which is more or less curving. lVhen pressure is brought to bear upon the key member to move the same into position to permit of the unlocking or withdrawal of the bolt, the ball 86 will be forced upward out of the pocket 35 by traveling along the curved wall and will be thus forced into the slot 26, and out of locking position, as will more fully hereinafter appear. Movement of the ball in any other direction other than along the wall 39 is prevented, by reason of the straight wall 38.

A retaining member for the locking member 36 is provided which, in the construction shown, consists of a ball. 40 somewhat larger in diameter than the ball 36 in order that the balls may roll over one another without getting their centers alined and becoming locked. This ball 40 moves back and forth in the arcuate-slnipcd slot 26, and

when the locking member 36 is in locking position, the ball 40 overlies the same, as shown in Figs. 9, 10, 14, and 15, whereby movement of the locking member out of the pockets 35 and 37 is prevented. The retaining member 40 is held in proper correlation with the locking member 36 by means of an arcuate shaped member 41, as shown in Figs. 8 to 12 inclusive, which is adapted to slide back and forth within the arcuateshaped slot 26. For the purpose of defining the same in the description of the device, it may be termed a shiftable member, and it, in fact, acts as a connection between the key member and locking member, whereby, when said key member is moved into certain positions during the operation of the device, the movements of the locking member will be controlled in accordance with the movements of the key member. The shiftable member 41 is formed at one end with a cam surface 41 and a cam surface 42, the latter being best shown perhaps in Fig. 8. The cam surface 42 co-acts with the cam surface 30 on the key member 27, and the cam sur face 41" co-acts with and is engaged by the cam surface 29 on said key member.

As heretofore stated, the key member is adapted to be projected through an opening or recess 30 in the bolt 81, and when pressure is exerted on said bolt tending to push the end thereof out from the eye 21, pressure will be necessarily brought to bear on the key member 27, and an initiatory movement given the same. The locking member 36 will be in the position shown in Figs. 9 and 14 when said initiatory movement is given, and under these conditions, the member cannot slide in the slot to any appreciable extent, and the shoulder 32 provents said member from any rectilinear movement to project it through the opening Therefore, when such initiator-y pressure is exerted upon the key member, it will result in the end 33 being forced upward through the slot 30*, and such movement will project said end in a manner so that it acts as a hammer or instrument to break the seal 43 lying above said key, as shown in Fig. 5. That the key member will assume this position under pressure is obvious from the fact that it will be the only direction in which the key member can move, and that the locking member not being positively connected to any portion of the key member will permit of this move lnent, such movement being a'turning or a pivotal one about the locking member as a center. Therefore, by using the ball as a locking member, it is possible to make it perform the function of a pivotal member about which the key swings to project it, such projection causing the seal to be shattered.

It is understood that the key member will be tilted .or swung sutlicient to break the seal before any action has taken place, which tends to withdraw the ball from the pockets and 37. This will be clearly understood by referring to Fig. 5. It is desirable to keep the retaining ball or member 40 in close relation to the locking member 36 to prevent any appreciable movement thereof during this seal breaking movement of the key member, and it is to accomplish this that I provide the cam surfaces 30 and 42. As the key member is lifted, the cam surface 30 will act against the cam surfaces 41 to crowd or force the shiftable member toward the retaining and locking members. The position assumed by the parts during this movement is shown in Fig. 10. The reason for providing this movement of the shiftable member is to prevent the retaining member from assuming any position which might allow of the escape of the locking member during or prior to this seal breaking operation. Owing to slight inaccuracies which may ocur in manufacturing the different portions of the lock and the differences in the thickness of the seal, it might be possible to raise the key member into its initial raised position without effecting a shattering of the seal, and, if the locking member were forced into a position to free the key member during this initial movement, a continued pressure brought to bear upon the key member would cause it to advance in the slot 25 sufficiently to permit the withdrawal of the bolt. This would effect an operation of the device without mutilating or breaking the seal. To prevent any displacement of the locking member during the initial tilting movement of the key member, I make pro vision for the above described movement of the shiftable member 41, whereby the retaining member and locking member are maintained in such relation to one another as to prevent movement of the locking mem ber out of locking position during such initial tilting movement.

The foregoing operation is the initial step taken in moving the bolt to displaced position. The second step is brought about by a further movement of the bolt, which further movement brings into action a cam surface 44 on the under face of the bolt mem ber. This cam surface is clearly shown in Figs. 13, 14, 15, and 18, and lies adjacent a groove 45 in the under face of said bolt which terminates in a pocket 46. The cam surface 44, as shown in Fig. 18, lies at a point of juncture of the pocket 46 and groove 45. A portion of the groove 45 is in the nature of a groove 48 formed in a flange or rib 49 integral with or secured to the casing 19, as in Fig. 18.

WVith the parts in locked position, as shown in Fig. 14, the cam surface occupies a position to one side of the retaining member 40, which member lies within the pocket 46. During the initiatory movement of the key 27, owing to the engagement of the shiftable member 41 with the retaining member, the retaining member and the shiftable member continue to assume the same or practically the same relation, the retaining member continuing to lie within said pocket. When, however, by continued pressure, the bolt is advanced beyond the position assumed by the initiatory movement, the cam member will act to force the retaining member to one side, out of the pocket 4-6, and in the pocket .18, as illustrated in Figs. 13 and 17. When the retaining member is thus placed, it is also lying within an enlarged portion of the arcuate-shaped groove 26. In this position, it will have passed from its position above the locking member 36, and into the position shown in Figs. 13 and 17, which leaves the locking member free to be forced out of the pockets and 37 and into the groove 26, whereby it assumes the position indicated in Jigs. 12 and 17.

In the action of forcing the retaining member into the pocket 48 an enlargement 50 forces the shiftable member ll in said groove and toward the key member. By the time the shiftable member commences its movement toward the key member, said key member will have been tilted or tipped suffi ciently so that the shiftable member will pass beneath the key member, as indicated in F 11. hen said shiftable member is movedv by the action of the retaining memher, the forcing of the shiftable member be neath the key member raises the key member to a height which makes certain the sufficient projection of the hammer surface of the key member through the slot 30" to eflect a breaking of the seal. After the parts ha e been placed in this condition, a slight reverse movement of the bolt will force the locking member out of the pockets 35 and 37 and into the groove 26. This is owing to the fact that the locking member must be forced upward about the surface before it will be raised suliiciently to enter the slot 26. This is accomplished by the reverse movement referred to. A. quick movement of the bolt in the initial direction of movement will carry the groove Bel in the key past the lockin member 36, and the key member can then continue its movement in the groove 25, thereby bringing the parts to the position indicated. in Fig. 8, in which position the bolt has been moved sufficiently to withdraw the end from the eye 21, as indicated in Figs. 1 and 9.. hen the parts are returned to locked position, the cam surface 29 will engage with. the cam surface 4 a and force the arcuate-shaped member 41 toward the retaining member 40, whereby said retaining member and locking member will be forced toward the key member, and in this manner the locking member will be forced into looking position when the key member shall have been moved sufficiently to bring the groove 3 L into position to receive the locking member.

The operation of the device will be understood from the foregoing, but briefly is as follows: i'lssuming the device is in unlocked position, the seal 43 is placed in position by passing the same through a slot 51 in the casing and into a cavity or frame 52 in the bolt 31. T he seal, when slipped into place, forces the key member down into a straight position; that is, it forces the projecting end back into the slot 30. The bolt is then forced so as to pass the end thereof through the eye 21., as indicated in Fig. t. By this movement, the alienate-shaped member all is crowded or forced toward the locking mem ber 36 through the cooperation of the cam surfaces 41 and 29. Such a movement crowds the retaining member toward the locking member, and said retaining member being of a diameter larger than said locking member will roll on top of said locking member in the manner indicated in Figs. 9 and 10. ll henever the groove 3% shall have reached a position to receive the locking member 36, said locking member will enter this groove by reason of the pressure of the retaining member t-hereagainst; said forcing action which the retaining member is exerting will cause the locking member to finally enter into the pockets 35 and 37 with a quick snappy movement, thereby insuring its seating at the proper time. When the parts have reached this position, the bolt is in thrown or locking position, and the seal a is over-lying the key member 27, and in alineinent with, and exposed through, the slot in the casing in a manner which will be understood by referring to Fig. 4. In his manner the characters upon the surface of the seal can be readily discerned. As long as the seal remains in an unbroken condition, it is evidence that the lock has not been removed, and that the car has not been entered for any purpose; and the railroad employees in inspecting the car need only look at the seal, and if this is in an unbroken condition and bears the proper identifying characters, it is evidence that the car has not been opened and assurance is thus given that the contents thereof have not been disturbed. In order to withdraw the bolt 3,, it is first forced upward, such movement bringing pressure to bear on the key member :27, and causing said member to tip or tilt about the looting member as a center, whereby a portion of the key member projected upward through the slot 80, and. by such projection fractures the seal. llpon continued movement of the bolt, the retaining member is forced into the pockets L8, and enlarged portion 50 by action of the cam surface a l. This, of course, forces the arcuate-shaped piece 41 beneath the key member, as in Figs. 11 and 12, thereby projecting said key member still farther through the slot 30*. A slight reverse movement is then given to the bolt, which forces the locking member 36 into the groove or channel 26, and the parts are then in a position whereby a pressure tending to move the bolt in the direction first given it, will cause 7 the key member to travel past the locking member and along the groove 25, thereby enabling the parts to be brought into the position shown in Figs. 1 and 2, in which the bolt is withdrawn from the eye. Suitable stop means may be provided by forming a lug on the under face of the bolt member which engages with a shoulder or base 54 on the upper surface of the base plate, said lug traveling within a depression 55 in the base plate during the necessary movements of the bolt to move it into and out of locking position. Adjacent the end of the bolt, I provide a diagonally extending slot 56 to receive th wire or other member of the ordinary lead or wafer seal. By forming the slot in this manner, the wire, when inserted therein, will travel upward and come out at a point beyond the eye 23, so that, after being inserted in said slot and brought back to secure it to the lead or other seal, said wire will embracethat is extend across the top of the eye 21, which is a desirable manner of placing the wire. It is understood that the use of this wire seal is only contemplated in case it is not possible to procure one of the clay seals, such as has been described as being used with this form of lock.

I claim:

1. In a lock, the combination of a casing, a bolt slidable therein, a key for the bolt, a locking member for the key having no positive connection therewith, said bolt upon its initial movement of withdrawal bearing against said key and rocking the same about the locking member as a center, and a fragile seal, said key when rocked striking said seal and fracturing the same, substan tially as described.

2. In a lock, the combination of a casing, a bolt slidable therein, a key for the bolt, a locking member for the key in the form of a ball freely detachable from all other portions of the device, said bolt upon its initial movement of withdrawal bearing against said key and rocking the same about said ball as a center, and a fragile seal, said key when rocked striking said seal and fracturing the same, substantially as described.

3. In a lock, the combination of a casing, a bolt, slidable therein, a key for the bolt arranged to be projected through the bolt, a fragile seal carried by the bolt and overlying said key, and means for causing a projection of said key through said bolt to fracture said seal when pressure is exerted on said bolt tending to move the same to withdrawn position, substantially as described.

4. In a lock, the combination of a casing, a bolt slidable therein, a key for the bolt, a fragile seal carried by the bolt, said casing having an aperture through which said seal is exposed, a series of members projecting inwardly from the walls of said aperture, means for fracturing the seal upon initial withdrawal movement of the bolt, means for locking the key, and means for moving said locking means from locking position after the initial withdrawal movement of the bolt, substantially as described.

5. In a lock, the combination of a bolt, a fragile seal carried by said bolt, a key for said bolt underlying said seal and arranged to be projected through said bolt, means for causing an initial projection of the key upon initial withdrawal movement of the bolt to fracture the seal, means for locking said key, means for forcing said locking means out of locking position upon a movement of the bolt in a reverse direction from the first mentioned movement, and means for causing a further projection of the key upon said reverse movement, substantially as described.

6. In a lock, the combination of a bolt, a seal, means for breakingthe seal moved to acting position by pressure exerted in giving the bolt initiatory withdrawal movement, locking means for the bolt, means for moving said locking means to unlocked position moved to acting position by pressure exerted during continued withdrawal movement, and means for forcingsaid locking means into locking position moved to act ing position by pressure exerted upon said bolt in moving said bolt to drawn position, substantially as described.

7. In a lock, the combination of a casing, a bolt slidable therein, a base member held by the casing, a key for the bolt mounted to slide in said base member, said bolt having a slot therethrough in which said key lies, a fragile seal carried by said bolt and arranged above said slot, a locking member for said key, means for causing the projection of said key through said slot upon initial movement of the bolt to withdrawnposition, whereby said seal is shattered, said locking member serving as a center of movement for said key during such projection,

means for maintaining the locking member.

bolt, said bolt having a slot therethrough in which said key lies, a base member held by the casing in which said key has a sliding movement, a locking member in said base member engaging the key adjacent the lower edge thereof, a fragile seal overlying the slot in the bolt, means for projecting the upper portion of the key through said slot upon initial movement of the bolt toward withdrawn position, said key rocking about said locking member as a center during such projection, a retaining member for the locking member, means for maintaining said retaining member in close relation to said locking member during said initiatory projectin operation, and means for moving said locking member out of locking position upon further withdrawal movement of the bolt, substantially as described.

9. In a lock, the combination of a casing, a bolt slidable in the casing having a slot therethrough, a key for said bolt lying in said slot, a fragile seal above said slot, a locking member for said key, means for re taming said locking member in locked posi tion comprising a shiftable member moved by key, means for moving said shiftable member upon initial movement of the bolt to withdrawn position, whereby said locking member is maintained in locked position, and means for causing a rocking of the key member about the locking member as a center during such initial movement, whereby said key is projected through said bolt to fracture said seal, substantially as described.

10. In a lock, the combination of a casing, a bolt slidable therein having a slot there through, a key for the bolt lying in said slot, a fragile seal above said slot, a locking member for said key, means for maintaining said locking member in position embodying a shiftablemember, a cam surface on the shiftable member, a cam surface on the key, said cam surfaces cooperating to move said shiftable member toward said locking member upon the initiatory withdrawal movement of said bolt, whereby said locking member is maintained in lock ing position during said initiatory movement, and means causing a projection of said key through said bolt on the initiatory movement thereof, whereby said seal is fractured, said key moving about said locking member as a center during such projection, substantially as described.

11. In a lock, the combination of a casing, a' bolt slidable therein having a slot therethrough, a key for said bolt lying in said slot, a fragile seal carried by the bolt and overlying said slot, a locking member for the key in the form of a ball, a retaining member for the locking member in the form of a ball, means for maintaining said retaining member in close relation to said locking member during the initial withdrawal movement of said bolt, whereby said locking member is maintained in locking position during such movement, and means for causing a projection of said key through said slot upon the initial movement of the bolt, whereby the seal is fractured, substantially as described.

12. In a lock, the combination of a casing, a bolt slidable therein having a slot therethrough, a key lying in said slot, a seal carried by the bolt and overlying the slot, a locking member for the key in the form of a ball, a retaining member for the locking member in the form of a ball, a shiftable member having one end engaging the retaining member, and the other end engaging the key, means for moving said shiftable member toward the retaining member upon initial withdrawal movement of the bolt, whereby the locking member and retaining member are held in close relation, means for causing the key to move about said locking member as a center and project through said slot on such initial movement of the bolt, means for forcing said shiftable member toward said key and away from the retaining member upon a secondary movement of the bolt, and means for moving the locking member out of locking position upon further movement of the bolt, substantially as described.

13. In a lock, the combination of a casing, a bolt slidable therein having a slot there through, a fragile seal carried by the bolt and overlying the slot, a key lying within said slot, a locking member for said key in the form of a ball, a retainer for said locking member in the form of a ball of larger diameter, means for maintaining said retaining member and said locking member in close engagement during the initial withdrawal movement of the bolt, whereby said key is projected through the bolt and shatters the seal, means for forcing said retaining member away from said locking member upon a secondary movement of said bolt, and means for forcing the locking member out of locking position by a continued movement of the bolt, substantially as described.

ll. In a lock, the combination of a casing, a bolt slidable therein and having a slot therethrough, a fragile seal above said slot, a key lying in said slot, said key having a groove in one side face terminating in a pocket, a locking member adapted to enter said pocket, means for maintaining said lock ing member within said pocket during the initial withdrawal movement of the bolt, and means causing said key member to rock about said locking member as a pivot upon such initial withdrawal movement, whereby said key is projected through said slot and shatters the seal, substantially as described.

15. In a lock, the combination of a casing, a bolt slidable therein and having a slot therethrough, a fragile seal above said slot, a key for said bolt lying in said slot, a locking member for the key, a shiftable member extending between the key and locking member, means for moving the shiftable member toward the locking member at the initiatory period of withdrawal movement of the bolt, whereby the locking member is held in looking position during such movement, means for projecting said key through said slot upon such initial movement whereby the seal is shattered, means for moving the shiftable member toward and beneath the key member upon a further withdrawal movement of the bolt, whereby the key is projected farther through said slot, and means for forcing the locking member out of locking position to permit of the complete withdrawal of the bolt, substantially as described.

16. In a lock, the combination of a casing, a slidable bolt therein and having a slot therethrough, a seal above said slot lying in said slot, a key for said bolt, a base plate held by said casing and provided with a longitudinal groove in which said key travels and further provided with an arcuateshaped groove having its ends communicating with the longitudinal groove, one end of said arcuate groove being deepened to provide a semi-cylindrical pocket, a semicylindrical pocket formed in the side of the key, a locking member for said key lying when in looking position partly within each of said pockets, a retaining member for said locking member lying within said arcuate groove, said groove being widened adjacent its pocketed end to permit the movement of said'retaining member out from engagement with said locking member, means for projecting said key through said slot upon initial withdrawal movement of said bolt, whereby said seal is shattered, means for forcing said retaining member into said enlarged portion upon further movement of the bolt, and means for forcing the locking member out of said pockets and into said arcuate groove upon continued movement of the bolt, substantially as described.

17. In a lock, the combination of a bolt, a key for said bolt, means for locking said key in position, a retaining member for said locking member, means carried by the bolt for forcing said retaining member out from engagement with said locking member, and means for forcing said locking member out of locking position, substantially as de scribed.

18. In a lock, the combination of a bolt, a key for said bolt, a locking member for said key, a retaining member for said looking member, a cam surface on the under side of said bolt, a pocket adjacent said cam surface, said surface acting to force said retaining member into said pocket and out of engagement with said locking member upon withdrawal movement of said bolt, and means for forcing said locking member out of locking position substantially as described.

19. In a lock, the combination of a bolt, a key for the bolt, a locking member for the key, a retaining member for the locking member, means for forcing said retaining member into close engagement with said looking member upon initial withdrawal movement of the bolt, means secured to the under side of said bolt for forcing the retaining member out of engagement with said looking member upon a further movement of the bolt, and means for forcing the locking member out of locking position upon continued movement of the bolt, substantially as described.

20. In a lock, the combination of a bolt, a key for the bolt, a locking member for said key, a retaining member for said locking member, means on said key for forcing the retaining member toward the locking memher during the initial withdrawal movement of the bolt, means on said bolt for forcing said retaining member away from said locking member upon further movement of the bolt, and means on the key for forcing the locking member out of looking position upon continued movement of the bolt, substantially as described.

21. In a lock, the combination of a bolt, a key for the bolt, a locking member for the key, a retaining member for the locking member, means on said key for forcing the retaining member toward the locking member upon initial withdrawal movement of the bolt, means on the bolt for forcing the retaining member away from the locking member upon further movement of the bolt, means on the key member for forcing the locking member out of locking position upon continued movement of the bolt, and means on the key member for returning the retaining member and locking member to looking position upon a return movement of the bolt to drawn position, substantially as described.

KINGMAN N OTT OATHER.

Witnesses:

/VM. P. Bonn, EPHRAIM BANNING.

I Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

